Automatic sprinkler-head.



E. McL. LONG.

AUTOMATIC SPRINKLER HEAD.

APPLICATION FILED IBB.11, 1913.

1,079,1 36, Patented Nov. 18, 1913.

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EUGENE MOLEAN LONG, OF NEW YORK, N. Y.

AUTOMATIC! SPRINKLER-HEAD.

To all whom 2'25 may concern:

Be it known that I, EUGENE MoLmN Lone, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Automatic Sprinkler-l'leads; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable other skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marks thereon, which "form a part of this specification.

This invention relates to new and useful improvements in sprinkler heads used in connection with pipe systems in buildings and which are normally closed and held in position by thermostatically-actuated mechanism, made operative by the fusing of a metal.

The invention comprises various details of construction and combinations and arrangements of parts which will be hereinafter fully described, shown in the accompanying drawings and then specifically defined in the appended claim.

I illustrate my invention in the accompanyingdrawings, in which Figure 1 is a side elevation of a sprinkler head made in accordance with my invention. Fig. 2 is a sectional view centrally and vertically through the sprinkler head. Fig. is a sectional view on line of Fig. 2. Fig. 4tis a view showing the parts of the invention disassembled.

Reference now being had to the details of the drawings by letter, A designates a hollow shell which is circumferent-ially threaded and adapted to fit a branching pipe of the sprinkler system, not shown, and provided with a head B with integral arms B rising therefrom. Said head is shouldered as at C for the reception of the disk I) which has an annular flange fitting within the bore of the head, and E designates a stopper restin upon said side and holding the same to its seat. The outer surface of the stopper is convened as at F, and N and O designate two metallic plates, the former of which has lugs N projecting therefrom which rests in recesses N in the shoes Q which rest upon the convexed surface of the stopper. The plate N is notched at its upper end as at and the plate 0 is provided Specification of Letters Eatent.

Application filed February 11, 1913.

Pat entcd Nov. 18, 1913, Serial No. 747,662.

with an integral curved linger 0 adapted to engage said slot N in the manner shown in Fig. 2 of the drawings. The plate 0 is apertru-ed as at O and its lower end is provided with lugs O which rest in imlentures or recesses formed in the shoe which also rests upon the convexed surface of the stopper. A locking plate, designated by letter R, has an angled end It passing through the aperture and engaging over the angled end N of the lug i shown clearly in Fig. .l of the drawings. The opposite edges of the plate R are shouldered as at I and the portion R and said shoulders are portions to which solder is adapted to hold the plates in the positions shown in Fig. 2 of the drawings. The parts being assembled as shown in l ig. 2 of the drawings, the plate R is soldered with a fusible metal T to the plate 0. A set screw, designated by letter S, is fitted in a central threaded aperture in the deflecting member B, which latter is provided with a series of serrations B" about its marginal edge and which is integral with the arms B, and is adapted to engage an indenture S formed in the upper curved portion 0 of the plate '0.

The locking device for holding the stopper in place and which comprises the es seutial part of the present invention depends for its successful operation, after the fusible metal T has melted, upon an outward thrust at the bottom of the plates LT, thus forcing the latter apart. Said outward thrust is accomplished by the wedging effect of the stopper as it is forced upward by the pressure of water or by having the lower ends of the plates supported upon blocks which rest upon a flat topped stopper, as shown in Fig. 5 of the drawings, and which blocks are so shaped and adjusted to the top of the stopper that they may tilt outward as the stopper is forced up by the water pressure, thus producing a wedging effect which will force the bottoms of the interlocked plates apart.

The system being equipped with sprinkler heads made in accordance with my invention and in the event of the temperature in the room rising to a suflicient degree to melt the solder which is of a low fusible nature, the plates N and O, which are held under pressure by reason of the screw engaging the same and by reason of the outer surface of the stopper being convexed, the

plates will readily fall apart under the pressure of the water bearing upon the disk and stopper, thus allowing the sprinkler head to be automatically set into operation. 'As the Water comes through the shell and striking the deflecting hood or disk B with its flanged edges, a spray of water will be thrown in all directions.

What I claim to be new is A sprinkler head comprising a shell adapted to be fastened to a water main system and provided with a deflecting portion,

. a disk adapted to seat upon a shoulder within said shell, a stopper engaging said disk and havlng lts outer surface convexed, shoes engaging sa1d convexed surface, plates 111- plates, a locking member having oneend passing through an aperture-1n, one of the interlocking plates and engaging an angled projection of the other plate and held to the apertured plate by a fusible solder, as set forth.

In testimony whereof I hereunto my signature in the presence of two witnesses.

EUGENE MQLEAN LONG.

"Witnesses:

JOHN M. BUFFINGTON, ALBERT O. W. SIEGKE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of latents, 7

Washington, I). C. 

